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1

Wednesday, February 25th 2009, 5:45pm

Bharat's future construction

All Bharat's construction until 1939 are already in the Encyclopedia. 1940 pretty much is set, more destroyers like the ones being laid down in 1939 plus two of these cruisers. Pretty much enlarged Vadadoras.

Chapra, India Heavy Cruiser laid down 1940

Displacement:
12,843 t light; 13,518 t standard; 15,317 t normal; 16,756 t full load

Dimensions: Length overall / water x beam x draught
673.36 ft / 656.17 ft x 68.90 ft x 23.62 ft (normal load)
205.24 m / 200.00 m x 21.00 m x 7.20 m

Armament:
8 - 9.84" / 250 mm guns (4x2 guns), 476.75lbs / 216.25kg shells, 1940 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 4.92" / 125 mm guns (4x2 guns), 59.59lbs / 27.03kg shells, 1940 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
14 - 1.38" / 35.0 mm guns (7x2 guns), 1.31lbs / 0.59kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
24 - 0.59" / 15.0 mm guns (6x4 guns), 0.10lbs / 0.05kg shells, 1940 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 4,312 lbs / 1,956 kg
Shells per gun, main battery: 150
15 - 21.7" / 550 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.10" / 155 mm 426.51 ft / 130.00 m 9.97 ft / 3.04 m
Ends: Unarmoured
Main Belt covers 100% of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.27" / 210 mm 3.94" / 100 mm 8.27" / 210 mm
2nd: 1.57" / 40 mm 0.79" / 20 mm 1.18" / 30 mm
3rd: 0.79" / 20 mm - -
4th: 0.79" / 20 mm - -

- Armour deck: 1.77" / 45 mm, Conning tower: 5.12" / 130 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 92,401 shp / 68,931 Kw = 32.00 kts
Range 20,000nm at 12.00 kts
Bunker at max displacement = 3,238 tons

Complement:
687 - 894

Cost:
£7.489 million / $29.954 million

Distribution of weights at normal displacement:
Armament: 539 tons, 3.5%
Armour: 3,272 tons, 21.4%
- Belts: 1,085 tons, 7.1%
- Torpedo bulkhead: 0 tons, 0.0%
- Armament: 1,091 tons, 7.1%
- Armour Deck: 1,029 tons, 6.7%
- Conning Tower: 68 tons, 0.4%
Machinery: 2,471 tons, 16.1%
Hull, fittings & equipment: 6,361 tons, 41.5%
Fuel, ammunition & stores: 2,474 tons, 16.2%
Miscellaneous weights: 200 tons, 1.3%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
20,830 lbs / 9,449 Kg = 43.7 x 9.8 " / 250 mm shells or 2.4 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 3.2 ft / 1.0 m
Roll period: 16.1 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.72
Seaboat quality (Average = 1.00): 1.05

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.502
Length to Beam Ratio: 9.52 : 1
'Natural speed' for length: 29.34 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.20 ft / 8.90 m
- Forecastle (20%): 20.01 ft / 6.10 m
- Mid (50%): 19.69 ft / 6.00 m
- Quarterdeck (15%): 19.69 ft / 6.00 m
- Stern: 19.69 ft / 6.00 m
- Average freeboard: 20.53 ft / 6.26 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.5%
- Above water (accommodation/working, high = better): 130.1%
Waterplane Area: 31,382 Square feet or 2,916 Square metres
Displacement factor (Displacement / loading): 120%
Structure weight / hull surface area: 133 lbs/sq ft or 648 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.31
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent

2

Wednesday, February 25th 2009, 5:51pm

Just out of curosity, what is the layout of the torpedo tubes?

3

Wednesday, February 25th 2009, 6:01pm

Quoted

Originally posted by eltf177
Just out of curosity, what is the layout of the torpedo tubes?


Three 4 and one three.

4

Wednesday, February 25th 2009, 6:28pm

?? So two banks of 4 on one beam and one bank of 4 and one bank of 3 on the other beam??? Doesn't make much sense....

5

Wednesday, February 25th 2009, 6:31pm

Quoted

Originally posted by Hrolf Hakonson
?? So two banks of 4 on one beam and one bank of 4 and one bank of 3 on the other beam??? Doesn't make much sense....


LOL. I know I mess it up. It was supposed to be sixteen but now I don't have SS capabilites so I'm stuck with the 15.

6

Thursday, February 26th 2009, 1:30pm

Deck armor is a bit light

for the league she'll be playing in.

Apart from that, well done!

7

Wednesday, April 29th 2009, 2:24pm

Thanks Walter for the SIM

1942 reconstruction of the Agra Class cruisers ( two in late 1942 and two in late 1943)

Agra, India Light Cruiser laid down 1927 (Engine 1942)

Displacement:
6,996 t light; 7,299 t standard; 8,080 t normal; 8,705 t full load

Dimensions: Length overall / water x beam x draught
565.12 ft / 557.74 ft x 55.77 ft x 19.36 ft (normal load)
172.25 m / 170.00 m x 17.00 m x 5.90 m

Armament:
9 - 4.92" / 125 mm guns (3x3 guns), 59.59lbs / 27.03kg shells, 1942 Model
Dual Purpose guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
10 - 4.13" / 105 mm guns (5x2 guns), 35.32lbs / 16.02kg shells, 1942 Model
Dual Purpose guns in deck mounts with hoists
on side, evenly spread, 1 raised mount
16 - 1.38" / 35.0 mm guns (8x2 guns), 1.31lbs / 0.59kg shells, 1942 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
24 - 0.59" / 15.0 mm guns (6x4 guns), 0.10lbs / 0.05kg shells, 1942 Model
Breech loading guns in deck mounts
on side, evenly spread, 2 raised mounts
Weight of broadside 913 lbs / 414 kg
Shells per gun, main battery: 250
8 - 21.7" / 550 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 377.30 ft / 115.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 104% of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.15" / 80 mm 1.97" / 50 mm 2.36" / 60 mm
2nd: 1.57" / 40 mm - -
3rd: 0.79" / 20 mm - -
4th: 0.79" / 20 mm - -

- Armour deck: 1.57" / 40 mm, Conning tower: 3.15" / 80 mm

Machinery:
Oil fired boilers, steam turbines,
Hydraulic drive, 4 shafts, 82,096 shp / 61,244 Kw = 32.75 kts
Range 12,500nm at 12.00 kts
Bunker at max displacement = 1,405 tons

Complement:
425 - 553

Cost:
£2.331 million / $9.323 million

Distribution of weights at normal displacement:
Armament: 114 tons, 1.4%
Armour: 1,269 tons, 15.7%
- Belts: 483 tons, 6.0%
- Torpedo bulkhead: 0 tons, 0.0%
- Armament: 170 tons, 2.1%
- Armour Deck: 588 tons, 7.3%
- Conning Tower: 27 tons, 0.3%
Machinery: 2,145 tons, 26.5%
Hull, fittings & equipment: 3,319 tons, 41.1%
Fuel, ammunition & stores: 1,084 tons, 13.4%
Miscellaneous weights: 150 tons, 1.9%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
10,037 lbs / 4,553 Kg = 168.4 x 4.9 " / 125 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 3.0 ft / 0.9 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.25
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.470
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 23.62 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 2.46 ft / 0.75 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.89 ft / 8.50 m
- Forecastle (20%): 17.55 ft / 5.35 m
- Mid (50%): 17.55 ft / 5.35 m
- Quarterdeck (15%): 17.55 ft / 5.35 m
- Stern: 17.55 ft / 5.35 m
- Average freeboard: 18.38 ft / 5.60 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 100.3%
- Above water (accommodation/working, high = better): 128.8%
Waterplane Area: 20,174 Square feet or 1,874 Square metres
Displacement factor (Displacement / loading): 122%
Structure weight / hull surface area: 101 lbs/sq ft or 493 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.05
- Longitudinal: 1.48
- Overall: 1.09
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

This post has been edited 3 times, last edit by "perdedor99" (Apr 29th 2009, 2:26pm)


8

Wednesday, April 29th 2009, 2:28pm

Thanks to Walter for the SIM. One will start refit in late 1942 and the second one in late 1943.

Vadodara, India Heavy Cruiser laid down 1928 (Engine 1942)

Displacement:
11,149 t light; 11,655 t standard; 12,657 t normal; 13,459 t full load

Dimensions: Length overall / water x beam x draught
646.33 ft / 646.33 ft x 65.94 ft x 21.65 ft (normal load)
197.00 m / 197.00 m x 20.10 m x 6.60 m

Armament:
8 - 8.27" / 210 mm guns (4x2 guns), 282.57lbs / 128.17kg shells, 1928 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
10 - 4.92" / 125 mm guns (5x2 guns), 59.59lbs / 27.03kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread, 1 raised mount
20 - 1.38" / 35.0 mm guns (10x2 guns), 1.31lbs / 0.59kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
24 - 0.59" / 15.0 mm guns (6x4 guns), 0.10lbs / 0.05kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, 4 raised mounts
Weight of broadside 2,885 lbs / 1,309 kg
Shells per gun, main battery: 150
8 - 21.7" / 550 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.12" / 130 mm 419.95 ft / 128.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 100% of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5.12" / 130 mm 3.15" / 80 mm 3.94" / 100 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
3rd: 0.79" / 20 mm - -
4th: 0.79" / 20 mm - -

- Armour deck: 1.97" / 50 mm, Conning tower: 5.12" / 130 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 110,524 shp / 82,451 Kw = 33.35 kts
Range 12,000nm at 12.00 kts
Bunker at max displacement = 1,804 tons

Complement:
596 - 775

Cost:
£4.190 million / $16.760 million

Distribution of weights at normal displacement:
Armament: 361 tons, 2.8%
Armour: 2,456 tons, 19.4%
- Belts: 881 tons, 7.0%
- Torpedo bulkhead: 0 tons, 0.0%
- Armament: 499 tons, 3.9%
- Armour Deck: 1,016 tons, 8.0%
- Conning Tower: 60 tons, 0.5%
Machinery: 2,887 tons, 22.8%
Hull, fittings & equipment: 5,245 tons, 41.4%
Fuel, ammunition & stores: 1,508 tons, 11.9%
Miscellaneous weights: 200 tons, 1.6%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
15,286 lbs / 6,933 Kg = 54.1 x 8.3 " / 210 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 3.5 ft / 1.1 m
Roll period: 14.8 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.52
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.480
Length to Beam Ratio: 9.80 : 1
'Natural speed' for length: 25.42 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.36 ft / 8.95 m
- Forecastle (20%): 19.19 ft / 5.85 m
- Mid (50%): 19.19 ft / 5.85 m
- Quarterdeck (15%): 19.19 ft / 5.85 m
- Stern: 19.19 ft / 5.85 m
- Average freeboard: 20.01 ft / 6.10 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 98.1%
- Above water (accommodation/working, high = better): 147.6%
Waterplane Area: 27,892 Square feet or 2,591 Square metres
Displacement factor (Displacement / loading): 112%
Structure weight / hull surface area: 120 lbs/sq ft or 585 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.25
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

9

Wednesday, April 29th 2009, 2:28pm

Triple dual-purpose mounts are historically problematic. Why not use twin 15cm mountings instead?

10

Wednesday, April 29th 2009, 2:32pm

Quoted

Originally posted by Hrolf Hakonson
Triple dual-purpose mounts are historically problematic. Why not use twin 15cm mountings instead?


Indeed. Is being done on purpose. Bharat will use triple DP mounts in new constructions from 1940 to 1942, they will make decent antiship guns but indeed will be problematic in the AA role. Will start construction of a DP 150mm armed ship in 1943-44.

11

Wednesday, April 29th 2009, 2:41pm

Heh, I wasn't really referring to a DP 15cm mounting, I figured these ships with 10 10.5cm guns have enough heavy AA. But if you know of the problems and are building something that won't work well on purpose, that's OK.

12

Wednesday, April 29th 2009, 2:53pm

I tend to do that. I hate building perfect ships or systems that work as advertised. Try to keep it as real as posible. :rolleyes: Also the reasoning of the refit is to make then AA escorts on a pinch.

This post has been edited 1 times, last edit by "perdedor99" (Apr 29th 2009, 2:54pm)


13

Wednesday, April 29th 2009, 3:26pm

I don't understand the Agra's. You're turning a perfectly fine light cruiser into...? An overgrown destroyer? If you where replacing the triple 6" turrets with twin 'DP' 6" turrents I could understand, but that?

14

Wednesday, April 29th 2009, 4:16pm

Like a said. A "mistake" You don't have to make the right decisions all the time. :rolleyes: Also I have to come up for a reasoning development of 150mm DP guns. I have already hinted of Bharat starting development of a new DP gun but will not be in any ship till late 1943 at the earliest. The triple 125mm DP mounts will be overall an attempt to increase the AA firepower. Also with the arrival of the new armored cruisers the Agra's could be used for secondary missions.

This post has been edited 1 times, last edit by "perdedor99" (Apr 29th 2009, 4:23pm)


HoOmAn

Keeper of the Sacred Block Coefficient

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15

Wednesday, April 29th 2009, 4:25pm

Well, both classes rated among the best world-wide when laid down. Do you really need these extended rebuilds are necessary? I think you could save some money, give them a 25% refit and life extension with tweaks to her upper works and light guns and keep it at that. I don´t see the need for new guns and engines....

16

Wednesday, April 29th 2009, 4:34pm

Quoted

Originally posted by HoOmAn
Well, both classes rated among the best world-wide when laid down. Do you really need these extended rebuilds are necessary? I think you could save some money, give them a 25% refit and life extension with tweaks to her upper works and light guns and keep it at that. I don´t see the need for new guns and engines....


Something to think about for the Vadadoras. Still basically I want to do the wrong thing on purpose for the Agras. I want to try to show a reasoning for why the Penshawars will be armed with dual 150mm DP guns. And by the middle 1940's I already have the Kanpurs-the Hyderabads and the Chapras on service.

17

Wednesday, April 29th 2009, 4:43pm

I don't intend to go beyond my 13cm guns for DP. History showed the Brits that their 5.25" (133mm) DP was really pushing the limits of a DP mounting, so it's my belief that 15cm DP will be an inferior mount. Too much trouble, particularly when I already have an excellent 13cm gun.

18

Wednesday, April 29th 2009, 4:48pm

For a naval 15cm DP gun to work well, it really needs to be auto-loaded. Otherwise, it doesn't work out well as an AA weapon.

19

Wednesday, April 29th 2009, 5:11pm

During WW2 Germany created a 15cm AA gun. It didn't work very well, the 12.8cm proved far better.

20

Wednesday, April 29th 2009, 5:17pm

Basically I will copy the 6"/Mark 47 automatic gun used by the US. Will not be mounted on any service ship until 1945.

This post has been edited 2 times, last edit by "perdedor99" (Apr 29th 2009, 5:18pm)